Bibcode
Balcells, M.; Cristobal-Hornillos, D.; Prieto, M.; Guzman, R.; Gallego, J.; Serrano, A.; Cardiel, N.; Pello, R.
Bibliographical reference
The Newsletter of the Isaac Newton Group of Telescopes (ING Newsl.), issue no. 6, p. 11-13.
Advertised on:
10
2002
Citations
2
Refereed citations
2
Description
Towards the end of the last decade, the international astronomical
community realised that exploitation of the new generation of 8-10-m
class telescopes would be hampered unless surveys of the sky with
suitable depth were carried out. Deep surveys aimed at the study of
distant galaxies require NIR imaging in order to cope with the
cosmological redshift of the galaxy spectral energy distributions
(SEDs). In 2000 our group started a deep survey in the Ks-band using
INGRID on the WHT and Omega Prime on the CAHA 3.5-m telescope. Our
target depth is Ks=22 in AB magnitudes. Good La Palma seeing and better
noise behaviour allows us to reach this depth in 2 hr exposures with
INGRID, the CAHA/Omega data being about 1 mag. shallower for equal
exposure times. On the other hand, the wider field of Omega allows a
faster coverage of sky area. Our survey, deemed the COSMOS Survey, thus
has two depth regimes, KAB=21 on a wide area and KAB=22 on the deeper
areas mapped with INGRID.